We had a pool build gone bad situation 4 years ago. The pool is great now but the final wall fittings were never placed on. I'm not even sure if the PB used the correct return fitting at all but since it's in concrete what's done is done. The eyeball ring fits directly onto it so we never worried about it. Now I would like to get it corrected but our piece does not resemble anything I've seen used before. Our local PB's only work with vinyl pools so I thought I'd ask here. Is there a connecting piece that would screw onto this so that a standard 1.5" threaded fitting would fit into it?